code_app/modules/twainui/twainui.cpp

#include "twain_user/twainui.h"
#include <QMessageBox>
#include <string>
#include "dialog_device_select.h"
#include "dialog_progress_ui.h"
#include "hg_settingdialog.h"
#include "dialog_twain_source_select.h"
#include "device_menu.h"
#include "base/HGBase.h"
#include "Manager.h"

#ifdef HG_CMP_MSC
#include "qwinwidget.hpp"
extern HINSTANCE g_hInst;
extern HGEvent g_event;
extern Manager *g_manager;
extern HGThread g_hThread;
#endif

static void HGAPI ThreadFunc(HGThread thread, HGPointer param)
{
    bool ownApplication = false;
    ownApplication = QMfcApp::pluginInstance(g_hInst);
    if (ownApplication)
    {
        qApp->setQuitOnLastWindowClosed(false);

        g_manager = new Manager;
        HGBase_SetEvent(g_event);
        qApp->exec();
        delete qApp;
    }
}

int choose_scanner(const std::vector<DEVQUEUI> &devs)
{
    if (!qApp)
    {
        HGBase_CreateEvent(HGTRUE, HGFALSE, &g_event);
        HGBase_OpenThread(ThreadFunc, NULL, &g_hThread);
        HGBase_WaitEvent(g_event);
    }

    if (NULL == g_manager)
    {
        g_manager = new Manager;
    }

    return g_manager->showDeviceSelect(devs);
}

char *apply_current_config(const char *dev_name, SANE_Handle device, LPSANEAPI api)
{
    dev_que devQue;
    gb::scanner_cfg *cur_cfg_ = nullptr;
    gb::sane_config_schm *curScheme = nullptr;

    HGChar cfgpath[512] = {0};
    HGBase_GetConfigPath(cfgpath, _countof(cfgpath) - 1);
    HGBase_CreateDir(cfgpath);
    devQue.set_root_dir(cfgpath);
    QString old = QString::fromStdString(cfgpath) + PATH_SYMBOL + "scanner.schm";
    if(QFile::exists(old))
        dev_que::update_old_cfg(old.toStdString().c_str());

    std::string devName = dev_name;

    int pid = 0;
    api->sane_control_option_api(device, (SANE_Int)0x8853, SANE_ACTION_GET_VALUE, &pid, NULL);
    
    devQue.add_scanner(devName.c_str(), pid);
    devQue.open_scanner(api, device, dev_name, true);

    std::string n(devQue.opened_scanner_name());
    for(int i = 0; i < devQue.scanners(); ++i)
    {
        SCANNER s = devQue.get_at(i);
        if(s.name == n)
        {
            cur_cfg_ = s.cfg;
            break;
        }
    }
    curScheme = cur_cfg_->get_scheme();
    if(!curScheme)
        curScheme = new gb::sane_config_schm();
    curScheme->begin_setting();

    std::string name = curScheme->get_scheme_name();
    char *str = const_cast<char*>(name.c_str());
    return str;
}

void twain_ui_free(void *buf)
{
    if (buf != nullptr)
    {
        delete buf;
        buf = nullptr;
    }
}

int show_setting_ui(SANE_Handle device, HWND parent, LPSANEAPI api, const char *devName, bool with_scan, std::function<void(ui_result)> callback)
{
    if (!qApp)
    {
        HGBase_CreateEvent(HGTRUE, HGFALSE, &g_event);
        HGBase_OpenThread(ThreadFunc, NULL, &g_hThread);
        HGBase_WaitEvent(g_event);
    }

    if (NULL == g_manager)
    {
        g_manager = new Manager;
    }

    return g_manager->showSettingUi(device, parent, api, devName, with_scan, callback);
}

int show_progress_ui(HWND parent, std::function<void (ui_result)> callback, std::function<void (int, void *, int)> *notify)
{
    if (!qApp)
    {
        HGBase_CreateEvent(HGTRUE, HGFALSE, &g_event);
        HGBase_OpenThread(ThreadFunc, NULL, &g_hThread);
        HGBase_WaitEvent(g_event);
    }

    if (NULL == g_manager)
    {
        g_manager = new Manager;
    }

    return g_manager->showProgressUi(parent, callback, notify);
}

int show_messagebox_ui(HWND parent, int event, void *msg, int flag)
{
    if (!qApp)
    {
        HGBase_CreateEvent(HGTRUE, HGFALSE, &g_event);
        HGBase_OpenThread(ThreadFunc, NULL, &g_hThread);
        HGBase_WaitEvent(g_event);
    }

    if (NULL == g_manager)
    {
        g_manager = new Manager;
    }

    return g_manager->showMessageBoxUi(parent, event, msg, flag);
}

int show_twain_srclist_ui(DSMENTRYPROC dsmProc, const TW_IDENTITY *appId, HGWindow parent, TW_IDENTITY *ds)
{
    if (!qApp)
    {
        HGBase_CreateEvent(HGTRUE, HGFALSE, &g_event);
        HGBase_OpenThread(ThreadFunc, NULL, &g_hThread);
        HGBase_WaitEvent(g_event);
    }

    if (NULL == g_manager)
    {
        g_manager = new Manager;
    }

    return g_manager->showTwainSrcUi(dsmProc, appId, parent, ds);
}